The D/Dock Expansion Station is compatible with all D-Family notebooks except the Latitude D500. The D/Port Advanced Port Replicator, D/View Notebook Stand and D-Family Monitor Stand are all compatible with the Latitude D500, as well as **the rest of the D-Family notebooks.

This seems very definite; but whenever I find this product in some online store, it never explicitly lists D530 as a supported product:

My money's on it physically connecting, but you getting some error in the BIOS saying that the dock isn't compatible with this model. Oh, and make sure your power adapter has enough output to handle the dock. I have been burned by that one personally.
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BroamJun 23 '11 at 17:25